package com.sumqun.mall.entity;

import java.text.SimpleDateFormat;
import java.util.Date; 
import java.util.UUID;
import java.util.concurrent.atomic.AtomicLong;
 
public class IdEntity {

	public Long id; 
	 
	public Long getId() {
		return id;
	}

	public void setId(Long id) {
		this.id = id;
	}
	
	@Override
	public String toString() {
		return "" + id  ;
	}
	
	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((id == null) ? 0 : id.hashCode());
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		IdEntity other = (IdEntity) obj;
		if (id == null) {
			if (other.id != null)
				return false;
		} else if (!id.equals(other.id))
			return false;
		return true;
	}
	
	public static String createUUID(){		
		UUID uid=UUID.randomUUID();
		String lid= uid.toString();
		return lid;
	}
	
	public static int randomID(int x){		
		 int rid= (int) (Math.random()* x);
		 if(rid<0){
			 rid += 1;			 
		 }
		 return rid;
	}
	
	
	public  static Long timeID(){		
		Long ltime = Long.valueOf(new SimpleDateFormat("yyyyMMddHHmmssSSS").format(new Date()).toString());
		return  ltime;
	}
	
	public static String dateID(){		
		Long ltime = Long.valueOf(new SimpleDateFormat("yyyyMMdd").format(new Date()).toString());
		return  ltime.toString();
	}
	
	public static Long aotmicLong(){		
		 AtomicLong idSequence = new AtomicLong();
		 return idSequence.incrementAndGet();
	}
	
	
		 
}
